var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var session = require('express-session')
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var positionRouter = require('./routes/position');
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//express-session

app.use(session({
  secret: 'h51801',//密钥 cookie的密钥 一般用随机的16位字符
  resave: false, // 每次请求完重新保存
  saveUninitialized: true,//强制未初始化的session保存
  cookie: {
    maxAge: 1000 * 600  //设置session持续生效的时间
  }
}))

//设置允许跨域
app.all('*', function (req, res, next) {
  res.header("Access-Control-Allow-Credentials", "true")
  res.header("Access-Control-Allow-Origin", "http://localhost:8080")
  res.header("Access-Control-Allow-Headers", "*");
  res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
  res.header("X-Powered-By", ' 3.2.1')
  res.header("Content-Type", "application/json;charset=utf-8");
  next();
});

app.use('/', indexRouter);
app.use('/users', usersRouter);

app.use('/position', positionRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
